Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of THURSDAY: FEBRUARY 12 , 2009 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 11.2 14.1 79 14.0 16.3 86 COTTONWOOD CREEK 7670 18.2 15.6 117 21.8 20.2 108 GRAND TARGHEE 9260 28.0 -M * 24.3 -M * GRANITE CREEK 6770 11.7 13.8 85 16.2 15.1 107 GRASSY LAKE 7265 22.0 25.6 86 25.2 27.3 92 GROS VENTRE SUMMIT 8750 8.6 10.2 84 10.3 9.4 110 GUNSIGHT PASS 9820 10.2 -M * 11.2 -M * LEWIS LAKE DIVIDE 7850 18.2 25.7 71 22.3 27.3 82 PHILLIPS BENCH 8200 18.2 20.6 88 20.4 21.4 95 SALT RIVER SUMMIT 7760 9.2 10.5 88 10.7 13.8 78 SNAKE RIVER STATION 6920 11.8 14.2 83 15.7 17.1 92 SPRING CREEK DIVIDE 9000 18.1 19.2 94 18.6 19.9 93 THUMB DIVIDE 7980 11.2 13.1 85 13.0 13.9 94 TOGWOTEE PASS 9580 19.9 18.4 108 21.9 18.2 120 TWO OCEAN PLATEAU 9240 24.9 20.7 120 19.3 20.3 95 WILLOW CREEK 8380 23.3 22.2 105 27.6 23.7 116 ----- ----- Basin wide percent of average 93 97 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9360 15.9 17.6 90 14.5 15.1 96 BLACK BEAR 8170 22.8 28.0 81 23.9 28.7 83 CANYON 7870 8.9 9.8 91 9.7 11.6 84 FISHER CREEK 9100 25.5 25.8 99 24.0 26.8 90 MADISON PLATEAU 7750 13.0 17.7 73 15.0 19.2 78 NORTHEAST ENTRANCE 7350 7.5 8.5 88 9.8 9.6 102 PARKER PEAK 9400 17.8 15.9 112 13.0 12.1 107 SYLVAN LAKE 8420 13.3 16.2 82 15.7 16.0 98 THUMB DIVIDE 7980 11.2 13.1 85 13.0 13.9 94 TWO OCEAN PLATEAU 9240 24.9 20.7 120 19.3 20.3 95 WHISKEY CREEK 6800 9.5 12.2 78 12.6 15.1 83 WHITE MILL 8700 16.8 17.6 95 16.6 19.9 83 WOLVERINE 7650 8.8 9.3 95 8.5 9.9 86 ----- ----- Basin wide percent of average 92 90 WIND RIVER BURROUGHS CREEK 8750 12.0 10.9 110 12.9 12.2 106 COLD SPRINGS 9630 5.0 6.3 79 6.7 7.6 88 DEER PARK 9700 6.6 13.1 50 10.4 15.9 65 HOBBS PARK 10100 7.2 10.3 70 7.6 8.8 86 LITTLE WARM 9370 7.7 8.3 93 9.8 9.8 100 SOUTH PASS 9040 7.1 12.0 59 9.3 13.4 69 ST. LAWRENCE ALT 8620 1.8 5.1 35 4.9 6.2 79 TOGWOTEE PASS 9580 19.9 18.4 108 21.9 18.2 120 TOWNSEND CREEK 8700 4.1 6.0 68 6.4 7.9 81 ----- ----- Basin wide percent of average 79 90 BIGHORN BASIN BALD MTN. 9380 14.6 14.2 103 11.9 12.6 94 BEAR TRAP MEADOW 8200 6.4 3.8 168 6.9 5.8 119 BLACKWATER 9780 16.5 17.7 93 15.1 15.3 99 BONE SPRINGS DIV 9350 14.8 11.4 130 11.4 10.3 111 EVENING STAR 9200 21.0 21.7 97 22.2 19.2 116 GRAVE SPRINGS 8550 5.7 6.3 90 6.8 6.8 100 KIRWIN 9550 8.9 8.1 110 10.1 8.2 123 MARQUETTE 8760 2.9 6.2 47 6.0 6.7 90 MIDDLE POWDER 7760 7.1 7.9 90 7.6 8.7 87 OWL CREEK 8975 3.7 3.6 103 3.6 4.0 90 POWDER RIVER PASS 9480 9.9 7.7 129 11.1 8.9 125 SHELL CREEK 9580 13.2 10.5 126 12.9 9.9 130 SYLVAN LAKE 8420 13.3 16.2 82 15.7 16.0 98 SYLVAN ROAD 7120 10.4 9.7 107 13.5 14.2 95 TIMBER CREEK 7950 2.7 3.9 69 6.0 4.8 125 YOUNTS PEAK 8350 14.0 12.8 109 12.9 12.2 106 ----- ----- Basin wide percent of average 102 106 SHOSHONE RIVER BLACKWATER 9780 16.5 17.7 93 15.1 15.3 99 EVENING STAR 9200 21.0 21.7 97 22.2 19.2 116 KIRWIN 9550 8.9 8.1 110 10.1 8.2 123 MARQUETTE 8760 2.9 6.2 47 6.0 6.7 90 SYLVAN LAKE 8420 13.3 16.2 82 15.7 16.0 98 SYLVAN ROAD 7120 10.4 9.7 107 13.5 14.2 95 YOUNTS PEAK 8350 14.0 12.8 109 12.9 12.2 106 ----- ----- Basin wide percent of average 94 104 POWDER-TONGUE BEAR TRAP MEADOW 8200 6.4 3.8 168 6.9 5.8 119 BIG GOOSE 7990 6.3 6.6 95 8.4 6.1 138 BONE SPRINGS DIV 9350 14.8 11.4 130 11.4 10.3 111 BURGESS JUNCTION 7880 8.8 7.9 111 9.6 8.5 113 CLOUD PEAK RESERVOIR 9860 12.8 8.7 147 12.4 8.8 141 DOME LAKE 8880 9.1 8.6 106 11.1 9.3 119 GRAVE SPRINGS 8550 5.7 6.3 90 6.8 6.8 100 HANSEN SAWMILL 8360 4.7 4.5 104 7.5 5.7 132 MIDDLE POWDER 7760 7.1 7.9 90 7.6 8.7 87 POWDER RIVER PASS 9480 9.9 7.7 129 11.1 8.9 125 SUCKER CREEK 8880 10.6 7.9 134 12.4 9.4 132 TIE CREEK 6870 3.6 4.3 84 10.1 7.2 140 ----- ----- Basin wide percent of average 117 121 BELLE FOURCHE BLIND PARK 6890 7.9 5.8 136 12.3 8.3 148 COLE CANYON 5910 4.7 5.0 94 9.3 5.0 186 NORTH RAPID CREEK 6130 7.6 5.7 133 10.3 6.8 151 ----- ----- Basin wide percent of average 122 159 UPPER N. PLATTE RIVER COLUMBINE 9160 19.6 18.7 105 18.5 18.2 102 DIVIDE PEAK 8880 15.4 13.9 111 17.3 14.9 116 ELK RIVER 8700 17.6 13.8 128 16.4 14.0 117 JOE WRIGHT 10120 16.6 15.2 109 20.1 17.6 114 NORTH FRENCH CREEK 10130 23.0 19.9 116 22.0 17.8 124 OLD BATTLE 10000 22.8 22.3 102 27.8 24.6 113 SAGE CREEK BASIN 7850 8.4 8.1 104 9.8 8.6 114 SOUTH BRUSH CREEK 8440 9.8 8.3 118 11.4 11.8 97 TOWER 10500 30.9 33.0 94 30.2 27.8 109 WEBBER SPRINGS 9250 17.2 17.9 96 20.3 19.5 104 WILLOW CREEK PASS 9540 9.1 8.3 110 8.6 9.1 95 ----- ----- Basin wide percent of average 106 110 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10240 15.1 16.7 90 14.2 15.4 92 CASPER MTN. 7900 7.5 9.9 76 10.0 9.7 103 DEADMAN HILL 10220 11.6 11.5 101 12.0 11.5 104 DEER PARK 9700 6.6 13.1 50 10.4 15.9 65 LAPRELE CREEK 8375 6.1 7.8 78 6.9 8.8 78 RENO HILL 8400 8.0 9.1 88 9.1 10.1 90 ROACH 9700 11.7 12.2 96 13.3 12.7 105 SAND LAKE 10050 19.3 21.7 89 17.7 17.1 104 SOUTH PASS 9040 7.1 12.0 59 9.3 13.4 69 WINDY PEAK 7900 5.4 5.1 106 6.1 7.5 81 ----- ----- Basin wide percent of average 83 89 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 11.6 8.5 136 12.9 10.7 121 DIVIDE PEAK 8880 15.4 13.9 111 17.3 14.9 116 OLD BATTLE 10000 22.8 22.3 102 27.8 24.6 113 SANDSTONE RS 8150 11.9 10.8 110 14.6 13.7 107 WHISKEY PARK 8950 23.3 20.6 113 24.4 20.9 117 ----- ----- Basin wide percent of average 112 114 UPPER GREEN RIVER BIG SANDY OPENING 9080 7.9 10.5 75 7.9 9.9 80 BLIND BULL SUM 8650 17.5 20.1 87 14.7 16.7 88 EAST RIM DIVIDE 7930 6.7 9.5 71 9.4 8.8 107 ELKHART PARK G.S. 9400 9.5 9.7 98 10.6 9.6 110 GROS VENTRE SUMMIT 8750 8.6 10.2 84 10.3 9.4 110 GUNSIGHT PASS 9820 10.2 -M * 11.2 -M * KENDALL R.S. 7740 8.2 10.8 76 10.5 10.7 98 LOOMIS PARK 8240 12.0 12.4 97 14.4 12.9 112 NEW FORK LAKE 8340 8.9 8.4 106 8.3 8.5 98 SNIDER BASIN 8060 9.6 10.8 89 10.3 12.1 85 SPRING CREEK DIVIDE 9000 18.1 19.2 94 18.6 19.9 93 TRIPLE PEAK 8500 17.0 18.2 93 18.8 17.8 106 ----- ----- Basin wide percent of average 89 98 LOWER GREEN RIVER HAMS FORK 7840 6.9 9.3 74 7.6 9.1 84 HEWINTA 9519 5.8 7.6 76 8.5 10.1 84 HICKERSON PARK 9145 2.1 5.0 42 4.6 5.5 84 HOLE-IN-ROCK 9150 2.6 4.7 55 4.8 5.1 94 INDIAN CREEK 9425 15.0 19.3 78 14.2 18.4 77 KELLEY R.S. 8180 9.7 11.9 82 11.2 15.1 74 STEEL CREEK PARK 10200 7.3 10.6 69 10.7 11.1 96 ----- ----- Basin wide percent of average 72 83 UPPER BEAR RIVER BUG LAKE 7950 11.2 14.7 76 11.8 14.1 84 HAYDEN FORK 9212 11.8 11.1 106 14.5 14.9 97 KELLEY R.S. 8180 9.7 11.9 82 11.2 15.1 74 LILY LAKE 9156 9.5 9.2 103 11.3 12.5 90 MONTE CRISTO 8960 17.2 20.7 83 17.9 18.3 98 SALT RIVER SUMMIT 7760 9.2 10.5 88 10.7 13.8 78 TRIAL LAKE 9992 16.3 17.5 93 16.0 17.5 91 ----- ----- Basin wide percent of average 89 88 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1961-90. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.